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authorVineet Gupta <vgupta@synopsys.com>2015-02-19 19:14:02 +0530
committerBernhard Reutner-Fischer <rep.dot.nop@gmail.com>2015-02-20 11:35:33 +0100
commitcd03281d3c2c168f32e42783ee78995772a1763a (patch)
tree38cb22a9d490ace1888df78523f1dfe99b351e95 /libc
parent2a2b1d2a3e97b4353eec5a40c0de4b932340b3fc (diff)
sync_file_range: fix standard UCLIBC_SYSCALL_ALIGN_64BIT handling
Currently UCLIBC_SYSCALL_ALIGN_64BIT is not explicitly handled. Fix that and make sure the special handling is done for powerpc/xtensa which use UCLIBC_SYSCALL_ALIGN_64BIT but don't use hole punched syscall handler in kernel. Signed-off-by: Vineet Gupta <vgupta@synopsys.com> Cc: Baruch Siach <baruch@tkos.co.il> Cc: Max Filippov <jcmvbkbc@gmail.com> Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
Diffstat (limited to 'libc')
-rw-r--r--libc/sysdeps/linux/common/sync_file_range.c6
1 files changed, 5 insertions, 1 deletions
diff --git a/libc/sysdeps/linux/common/sync_file_range.c b/libc/sysdeps/linux/common/sync_file_range.c
index 6cd7e94d6..db797de62 100644
--- a/libc/sysdeps/linux/common/sync_file_range.c
+++ b/libc/sysdeps/linux/common/sync_file_range.c
@@ -24,7 +24,11 @@ static int __NC(sync_file_range)(int fd, off64_t offset, off64_t nbytes, unsigne
{
# if defined __powerpc__ && __WORDSIZE == 64
return INLINE_SYSCALL(sync_file_range, 4, fd, flags, offset, nbytes);
-# elif defined __mips__ && _MIPS_SIM == _ABIO32
+# elif (defined __mips__ && _MIPS_SIM == _ABIO32) || \
+ (defined(__UCLIBC_SYSCALL_ALIGN_64BIT__) && !(defined(__powerpc__) || defined(__xtensa__)))
+ /* arch with 64-bit data in even reg alignment #2: [arcv2/others-in-future]
+ * stock syscall handler in kernel (reg hole punched)
+ * see libc/sysdeps/linux/common/posix_fadvise.c for more details */
return INLINE_SYSCALL(sync_file_range, 7, fd, 0,
OFF64_HI_LO(offset), OFF64_HI_LO(nbytes), flags);
# elif defined __NR_sync_file_range2